Wrench



, C. G. MOLINE.

WRENCH. APPLICATION FILED NOV. H, 1919.

Patented Apr. 19, 1921.

erase;

CHARLES G. MOLIN'E, 0F WYANDOTTE, MICHIGAN.

' WRENCH.

' Specification of Letters Patent. Patented Apr. 19, 1921.

Application filed November 11, 1919. Serial no. 337,114.

new and useful Improvements in Wrenches,

of which the following is a specification.

This invention relates to wrenches of the handle lever grip type, and has for one of its objects to simplify the construction and increase the efficiency and utility of implements of this character.

Another object of the invention is to produce an implement of this character having means whereby the movable jaw is'a'nchored in adjusted position relative to the stationary jaw without changing the relative positions of the operating handles.

With these and other objects in view,the invention accordingly consists in the features of construction, combination and arrangement of parts as will be clearlv apparent as the description proceeds and then finally pointed out in the claims hereunto appended.

In the accompanying drawings,

Figure 1 is a side elevation with the operating grip handles or levers in closed position. r

Fig. 2 is a side elevation with the operating grip handles or levers in open position.

Fig. 3 is a cross section on the line 3-3 of Fig. 1.

Fig. 4 is aside elevation partly in section. Fig. 5 is a detail of the stock illustrating the construction of the stop shoulders.

Similar reference characters indicate corresponding parts throughout the several views in the drawings.

The improved implement includes a stock 10 extended at one end into an operating handle or lever 11 and with a stationary jaw 12 at the other. end, the jaw 12 being extend ed laterally at one side and the extended portion having aguideway therethrough indicated at 13. The body portion of the jaw' The shank 17 is formed with an extension 18 having its edges screw threaded as shown at 19. p

An adjusting nut 20 engages the threade extension, and is preferably cylindrical with its outer face milled or roughened to provide a grippingsurface.

The side faces of the nut are in parallel 7 relation and provide annular bearing faces.

A bearing washer 21'surrounds the extension 18 and engages the nut, to receive the wear and impact when the wrench is actuated.

A grip applying lever 22 is extended at. one end to form a handle-23 cooperating with the handle 11. The member 22 is U shaped transversely with the side portions extended laterally as shown at 2&1 to form cheek plates bearing upon opposite sides of the stock 10 and pivoted thereto as shown at 25. The cheek portions 24 are pierced by relatively large openings 26 to receive the outer portions of the nut 20.

Directed inwardly from opposite sides of the openings 26 are bearing lugs or projections 27 which contact respectively with the wear washer 17 and the opposite face of the nut, as shown in Figs. 1 and 2. The confronting faces of the washer and the nut, thus reduce the friction and likewise reduce the wear and preventv abrasion of the nut and washer.

The stock 10 is enlarged laterally as formed with stop lugs 29 which engage the stop shoulders when the members 11 and 22 are in closed position, to limit the inward movement, so that the handle members are spaced the same distance no matterhow far apart the jaws 12 and 16 may be set. The free ends 11 and 23 of the operating handles thus constantly occupy the same relative positions longitudinally of the implement,

when in closed position.

The size of the hand grip portion of the implement is constant for all the adjustments of the jaws.

The coacting stops 28 and 29 also effectually prevent danger of pinching the l-Q gers of the operator when the members 11 I and 22 are closed.

The member 10 is increased in widthas shown at 30 to enlarge the bearing portion over which the cheek members 2 1 operate.

The implement can be constructed of any required size and of any suitable material,

but will preferably be of tempered steel, as light as possible consistent with the strains to which the implement will be subjected spaced arms extending from the n1o1vable handle and pivoted to the stationary handle,

and transversely apertured, and an adjustint; nut engaging the threaded portion of the shank and extending through the openings in thearms and engaged by the contiguous walls of the same, whereby the shank is adjustable to control the space be- 2,. A wrench comprising a stationary hanxdle, a shank extending parallel with the handle, a guide yoke seoured to one end of the handle and slidably receiving the shank, a non-rnovable jaw carried by said end of thehandle and the yoke, a movable jaw formed on one end of the shank, screw threads on the other end of the shank, an adjusting nut 011 the screw threaded end of the shank, a movable handle of channel formation receiving the shank and extending parallel with the stationary handle, spaced arms formed on the end of the movable handle and having openings to receive the nut, and said arms having their ends pivoted to the stationary handle, and projections on the walls of the openings in said arms and adapted to engage the nut for moving the movable jaw in the direction ofthe stationary jaw on the movable handle moving in the direction ofthe stationary handle.

In testimony whereof I hereunto aiiix my tween the jaws and a positive grip produced signature.

a by actuating the movable handle. a CHARLES G. MOLINE. 

